Portable cardiograph



FIG. 1 is a perspective view showing my design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines are included for the purpose of illustrating unclaimed portions of the portable cardiograph and form no part of the claimed design. 

CLAIM The ornamental design for a portable cardiograph, as shown and described. 